/// HELPER FUNCTION: to loadFileToolStripMenuItem_Click() and resetToolStripMenuItem_Click() events
///
/// Tries to load the file into RAM.
/// If it can't load, it displays an error dialog.
/// If it succesfully load, then
/// - reset trace counter to 1
/// - re-create file trace.log
/// - set trace ON
/// - update gui panels
/// - enable/disable toolstrip menu items
/// RETURNS: -1 if failed to load file into RAM
/// 0 if loaded succesfully
private int tryLoadingFileIntoMemory()
{
try
{
int succesfullyOpenedFile = computer.loadSegmentsIntoRAM(filePath);
if (succesfullyOpenedFile == -1) // display a dialog error if not able to load
{
displayFailedToOpenFileDialog(this.currentFileName);
return(-1);
}
// get checksum and update labels
string memChecksum = computer.getMemChecksum();
this.checksumLabel.Text = "Checksum: " + memChecksum; // update checksum in GUI
this.fileOpenedLabel.Text = "File opened: " + this.currentFileName; // update file name in GUI
// reset trace
computer.resetTraceCounterToOne();
computer.turnOffTraceLog();
computer.turnOnTraceLog();
toggleTraceOnoffToolStripMenuItem.Text = "Turn OFF trace log";
// clear cpu list for dissembly panel
computer.clearCPUInstructionAddressDisassembledLists();
// clear disassembled instruction string in CPU
computer.clearCPUDisassembledCombinedString();
// clear terminal text and queue
terminlaTextBox.Clear();
charsQueue.Clear();
// enable menu item availability
updatePanelsAndResetMenuItems();
resetToolStripMenuItem.Enabled = true;
toggleTraceOnoffToolStripMenuItem.Enabled = true;
return(0);
}
catch (Exception fileOpenExcept)
{
fileOpenedLabel.Text = "File opened: None";
displayFailedToOpenFileDialog(this.currentFileName);
Debug.WriteLine("loadFileToolStripMenuItem_Click(): " + fileOpenExcept.Message);
return(-1);
}
}